Wagon loader and excavator



June 30,v 1931. A W HMSS 1,812,292

WAGON LDER AND ExcAvAToR Filq July, s, 195o ma!! l VENTO? mu "'Hq l I9 w News, l BY I We) ATTORTQ-EYS Patented June 30, 1931 PATENT OFFICE ALFRED-WfH-AISS, OF NEW YORKyN. Y., ASSIGNOR TO GEORGE HAISS MANUFACTURING C0. INC., 0F NEW YORK; NfY., A CORPORATIONl OF NEW YORK WAGON LOADER AND EXCAVATOR Appiication filed July 3,' 1930. serial No. 465,499.

This invention relates tomachines of the general type shown and described in thet alp'- plic'ation of Raymond C. Haiss, Serial' No; 352,196,1iled Aprile?, 1929, wagon loaders and excavators, and is directed particularly' to a modified form of diggngand feeding mecha;-vr`

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The' primary object of this invention is tov provide novel diggin'g'and feeding mechanism. bywliich the operationof such a machine as 'that to' which' this inventionv relates maybe satisfactorilyk carried out under 'par-f ticularlydifcult conditiondaswhen, for eXgk ample, the-materialtobe'handled is of'such a naturel asfto require' a good deal of loosening or breakingv up before it can be effectively acted up on by ythe 'materi alf-propelling means.' 'llo-the above end', the present invention contemplates the use Vof a rotatable sha-ft located at the pick-up' end-ofthe machine and: provided at opposite sides of the usual" conveyor with. a' plurality of rardial'lydisposed' and laterally-spaced overlapping pro# p'ellerH bladesvr constituting materialpropelL lin'g means, in' combination with a plurality of 'digging'elernentscommon tol each blade? and disposed in advance. thereof, the digging elements common to the" respective'V blades beL ingcne in advance of anotherandy having a combined width substantial-'ly equal'totheef-y fective'w-idth ofy their associated blade.

Among the advantages to be; derived Jfromv theabove generally described 'material-diggingf and propelling means; the following are of particular importance; first, effective'loos eming of the materialV in advance of the pro# peller bladesthroughout 'the combined effective width-` ofl each group of blades due'tothe laterafl disposition'fofv theA digging elements and: their dimensional relation" to each other and, second7 economical operationrof the Ina-- chine froml a power-consumption standpoint, due to'fthefadvancedv relation to"eachf other ofy the digging elements common to the/respec-I tive?propellerblades.` f

clude a. frame 10, adjustablj,7 mounted upon a traction device (not shown) by which the machine may be propelled from placeto place and moved at slow speed toward and' into the material to be loaded, there being a power unit such as an internal combustion engine not shown) employed asa driving means for the traction device as well as for the bucket conveyor 11., This conveyor includes a plurality of buckets 12 carried by a pair of chains 13, passing over sprockets of which the lower sprockets 14 only are shown, these lower sprocket-s being secured to the intermediate 4portion of a shaft 15 iournaled at 16 in the lower endpof the frame 10 and extending transversely of the machine. It will be understood that the driving connection between the above mentioned power unit and the conveyor chains 13, which drive the shaft 15, is such that this shaft is rotated in the direction of the arrow A in Figure 1. l

Secured to the portions of the shaft 15 which extend beyond each side of the conveyor 11, are a plurality of pick and propeller blade units 18. Each of these units includes aipropeller blade 19 and a pair of picks 20, the propellerblade and the pair of picks being connected respectively to cooperatingrv liead portions 21 and'- 22. The respective propeller blades and' associated pairs' of picks are secured to the shaft 15 by bolts 24, which pass throughr holes' in flanges 25 and 26 exscribed in the aforesaid application SerialV No. 352,196. Further, it will be noted that the propeller blades 19 are so positioned that there are four blade-,positions of impact to each rotation of the propellershaft 15, and that since there are two picks, one in advance `of the other, for each propeller blade, thereV are eight pick-positions of impact to veach rotation of the propeller shaft.

As shown most clearly in 'Figure 2, the propeller blades are arranged `in an overlapping relation at the opposite sides of the conveyor, and, as shown most clearly in Figure 4, the picks associated with each propeller blade are of a combined width substantially equal to the effective width of each such blade, each individual pick being equal in width to only substantially half the effective width of its associated propeller blade. By reason of the combined width of the picks common to eachpropeller blade, it is obvious that they will efecta digging *action inY advance of each blade substantially throughout the' ef- A fective width thereof.; and that the combined effective width of all of the picks at each side of the conveyor is substantially equal to the combined effective width of all'of the propeller blades at the respective sides Vof the conveyor.V The action of the picks is, therefore, such that they will dig a path at each side of the conveyor, which is equal'in width to the path at each side of the conveyor which is traversed by the overlapping propeller bladyeswhich function to progressively move the-loosened material forwardly and at the Sametime laterally' toward and into the path of the conveyor at the pick-up end thereof. Moreover, it 'will be appreciated that by arranging thepicksvof each propeller blade,

one in front of the other,the pick-impacts are delivered more frequently per revolution" of the shaft 1,5, than ifa. single pick were employed for eachsuch blade, the width'of each of which single picks would have to be twice that of the respective picks herein employed to effect thev same thorough digging'action as is attained by the present invention. AIt follows that', with the arrangement of picks herein shown, the advantage of thorough digging, as above explained, throughout the width of therespective paths at opposite sides ofthe conveyor is attained; and at Vthe same time the load incident-'to the digging eHort is made substantially uniform, with theresult that smoothness of operation is insured vand an economical consumption of power is attained.

Although onlyv one form of the invention is herein shown, it will be understood that various changes may be made without departing from the spirit of the invention or the scope of the following claims.

What is claimed is:

1. In a machine of the character described, a combined digging and feeding mechanism comprising a rotatable shaft, a plurality of laterally spaced propeller blades carried by said shaft at opposite ends thereof, and a plurality of picks associated lwith each of such blades and arranged in advance thereof.

2. In a machine of the character described, a combined digging and feeding mechanism Ycomprising a. rotatable shaft, a -plurality of laterally spaced propellerblades carried by said shaft at opposite ends thereof, and a plurality of`picks associated with each of such bladesV andj'arranged in different advanced positions thereof.

3. In a machine of the character described, a combined digging and feeding mechanism comprising a rotatable shaft, a plurality of propeller blades carried bysaid shaft, and a plurality of picks associated with each of such blades and arranged in advance thereof, each of said blades having an effective width greater-than the width of each .of its-associated picks and substantially equal to the com-` bined width of all of its associated picks.

4. In. a machine of the character described, a. combined digging and feeding mechanism comprising a rotatable shaft, a plurality of propeller blades carried` by said shaft,and a plurality' of`picks associated with each ofk suchV blades/and `arranged in. different advanced positions. each of said blades having an effective width greatery than the width of each of its associated picks and substantially equal to the combined width of all o-f its associated picks. Y A A 7 f 5. In a machine of the character described, a combined digging and feeding mechanism comprising a rotatable shaft, a plurality of propeller blades carried by said shaft, Ieach having :a hub portion, a. pluralityy of picks associated with veach of said blades and arranged in advance thereof, the picks common to eachblade having a common-hubfportion, and means for securing the yrespective hub portions together and foriclamping such respectivehub portions on said shaft. 6. In a machine of the character described, a. combined digging and feeding mechanism comprising a rotatable shaft, a plurality of propeller blades carried by said shaft, each having a hub portion, ay pluralityvof picks associated with each'of saidibladesand arranged in different advanced positions there-y of, the picks common to'each blade having a common hub portion, and. means for securing said shaft. Y 7. In a machineV of the character described,

a combined digging and feeding mechanism comprising a rotatable shaft, a plurality of propeller blades carried by said shaft, each having a hub portion, a plurality of picks associated with each of said blades and arranged in diierent advanced positions thereof, each of said blades having an effective Width greater than the Width of each of its associated picks and substantially equal to the combined Width of all of its associated picks.

In testimony whereof, I have signed this ALFRED W. HAISS.

specification. 

